Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos pontos de platina foram concedidos quando 70 pontos de prata foram concedidos?
 ###Tabelas: CREATE TABLE ap_poll (ap_poll_id AUTO_INCREMENT PRIMARY KEY, Week 2 Sept 7 VARCHAR, Week 3 Sept 14 VARCHAR, Week 4 Sept 21 VARCHAR, Week 5 Sept 28 VARCHAR, Week 6 Oct 5 VARCHAR, Week 7 Oct 12 VARCHAR, Week 10 Nov 2 VARCHAR, Week 12 Nov 16 VARCHAR, Week 14 Nov 30 VARCHAR, Week 15 Dec 7 VARCHAR, Week 16 (Final) Jan 9 VARCHAR) CREATE TABLE ranking_points (ranking_points_id AUTO_INCREMENT PRIMARY KEY, Finishing position VARCHAR, Points awarded (Platinum) INT, Points awarded (Gold) INT, Points awarded (Silver) INT, Points awarded (Satellite) INT) CREATE TABLE honour_board (honour_board_id AUTO_INCREMENT PRIMARY KEY, Year INT, Coach VARCHAR, Captain VARCHAR, Club Champion VARCHAR, Leading goalkicker VARCHAR, Player's Player VARCHAR, Iron Man Award VARCHAR, Community Award VARCHAR, Most Professional VARCHAR, Most Improved VARCHAR, NEAFL Player of the Year VARCHAR) CREATE TABLE torneio_rio-são_paulo (torneio_rio-são_paulo_id AUTO_INCREMENT PRIMARY KEY, Position INT, Team VARCHAR, Points INT, Played INT, Drawn INT, Lost INT, Against INT, Difference VARCHAR) CREATE TABLE season_2:_1989 (season_2:_1989_id AUTO_INCREMENT PRIMARY KEY, Episode title VARCHAR, Villain(s) VARCHAR, Identity(ies) VARCHAR, Reason(s) VARCHAR, Original airdate VARCHAR, DVD volume INT)  
SELECT Points awarded (Platinum) FROM ranking_points WHERE Points awarded (Silver) = 70